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4 Pcs 1" 4x100 Wheel Spacers 12x1.5 for Toyota Corolla, Echo, Scion xA & xB — 2026 Fitment & Technical Guide
Flush fenders, a wider track, steadier cornering — the 4 Pcs 1" 4x100 Wheel Spacers 12x1.5 kit delivers all three on 4-lug Toyota and Scion platforms. Each spacer pushes the wheel out a full inch, which cures the narrow factory stance on the Corolla, Echo, Scion xA, and first-generation xB without touching springs or control arms.
The spec is short and clean: 4x100 bolt pattern, 12x1.5 thread pitch, 25.4mm thickness, four spacers per kit. Below you get the full spec table, torque numbers, per-model fitment notes, the DTC codes to watch, and straight answers to the questions buyers ask most.
Why 1" Works on a 4x100 Toyota or Scion
One inch is the sweet spot on these cars. It is thick enough to pull +38 to +45 offset wheels flush with the fender, yet thin enough that most factory studs still deliver safe thread engagement — 6.5 full turns or more. Here is what ships in the kit:
- Bolt pattern: 4x100 — matches 4-lug Toyota Corolla (1993–2026), Echo (2000–2005), Scion xA (2004–2006), and Scion xB first gen (2004–2007).
- Thread pitch: 12x1.5 — OE-spec stud threading, so lug nuts engage cleanly with no cross-threading risk.
- Width: 1 inch (25.4mm) per spacer — the sweet spot for flush fender alignment on OEM and mild aftermarket wheels.
- Quantity: 4 spacers — a complete axle set for consistent track width front and rear.
- Material: premium 6061-T6 billet aluminum, CNC-machined.
- Finish: black anodized, guarding against road salt, moisture, and galvanic corrosion at the hub-spacer interface.
The complete kit is available at Koeep.com — 4 Pcs 1" 4x100 Wheel Spacers 12x1.5.
Full Specification Table
All values come from the kit's published specification data, using current measurement conventions (ISO 4032 / JIS D 4020 aligned).
| Specification | Value / Detail |
|---|---|
| Bolt pattern (PCD) | 4x100mm |
| Stud thread pitch | 12x1.5 |
| Spacer thickness | 1" (25.4mm) |
| Center bore | 54.1mm (OE Toyota/Scion hub register) |
| Material | 6061-T6 billet aluminum, CNC-machined |
| Finish | Black anodized, UV- and corrosion-resistant |
| Lug nut seat type | 60° conical (tapered seat) |
| Tensile / yield strength | 42,000 PSI minimum tensile / 35,000 PSI yield |
| Quantity per kit | 4 spacers |
| Vehicle compatibility | Toyota Corolla 4-lug (1993–2026), Echo (2000–2005), Scion xA (2004–2006), Scion xB 1st gen (2004–2007) |
Installation: Five Checks That Prevent Vibration and DTCs
Spacer installs go wrong at the surface, not at the spacer. Work through these five checks when fitting this 4x100 spacer kit:
- Clean every mating surface. Strip rust, debris, and old anti-seize off the hub face and wheel pad. Uneven surfaces are the number one cause of vibration complaints in current service data.
- Torque with a calibrated wrench. 76–83 ft-lbs (103–113 N·m) in a star pattern, re-checked at 50–100 miles.
- Count thread turns. At 1" thickness you need at least 6.5 full turns of lug nut engagement. Corolla 4-lug hubs (1993–2026) take this spacer without extended studs in most OE configurations.
- Check the hub-centric seat. The 54.1mm center bore must sit flush on the hub flange. Any gap means runout and possible ABS sensor misreads.
- Add threadlocker for a fixed setup. Many ASE-certified technicians apply medium-strength (blue) threadlocker on the spacer-to-hub studs for permanent or semi-permanent fitment.
DTC Codes Tied to Spacer Installation Errors
Correctly installed spacers do not trigger trouble codes. A sloppy install can, because runout and wobble read as wheel speed signal faults. These are the codes most often linked to spacer mistakes on Toyota/Scion platforms:
| DTC Code | Description | Spacer-Related Cause |
|---|---|---|
| C0200 / C0205 | Front right / left wheel speed sensor circuit | Spacer runout changes the sensor-to-tone-ring air gap |
| C0210 / C0215 | Rear right / left wheel speed sensor circuit | Hub misalignment from debris trapped at the spacer interface |
| C1223 | ABS control system malfunction | Tone ring signal variance from wobble caused by under-torqued spacers |
| C1336 | Zero point calibration undone | Track width change affects the yaw-rate baseline — needs VSC recalibration on 2020+ Corolla |
If a code appears after install: remove the spacers, clean both mating surfaces, reinstall with a calibrated torque wrench, then run a zero-point calibration through Toyota Techstream or a compatible 2026 OBD-II scan tool — before replacing any sensors.
Fitment by Model: Corolla, Echo, xA, xB
The 4x100 pattern has anchored Toyota compact cars for over three decades, but OE wheel widths and offsets differ per model, so a 1-inch spacer lands differently on each:
| Model | Years (4-Lug) | OE Wheel Width | Fitment Notes |
|---|---|---|---|
| Toyota Corolla | 1993–2026 (non-GR, 4-lug trims) | 5.5"–7.0" | Direct bolt-on. Brings OE +39 to +45 offset wheels flush to the fender edge. |
| Toyota Echo | 2000–2005 | 5.0"–6.0" | Significant stance gain on the narrow body. Verify stud protrusion with aftermarket steel wheels. |
| Scion xA | 2004–2006 | 5.5"–6.5" | OE +38 offset; a 1" spacer gets you near-zero effective offset for aggressive street fitment. |
| Scion xB (1st gen) | 2004–2007 | 6.0"–7.0" | The boxy body responds dramatically to a wider track. Ideal pairing with 205–215 section-width tires. |
One exclusion to know: the second-generation xB (2008–2015) moved to a 5x114.3 pattern, so these 4x100 spacers do not fit it. Count your lugs and measure your pattern before ordering.
Need to space one axle only, or want a spare pair? The identical 4x100 / 12x1.5 / 1" spec also ships as a 2-pack of 1" 4x100 wheel spacers for the same Corolla, Echo, xA, and xB applications.
Working a Different 4x100 Project?
Building a Mazda Miata or Honda Civic on the same 4x100 hub? Koeep also stocks a 25mm 4x100 spacer set for Corolla, Echo, Miata, and Civic, and the wider range of related hardware lives in the Wheels, Tires & Parts catalog.
For final compatibility verification on your exact trim and wheel combo, check the product page for the 4 Pcs 1" 4x100 kit.
Material and Manufacturing Standards
These spacers are CNC-machined from 6061-T6 billet aluminum — minimum tensile strength 42,000 PSI, yield strength 35,000 PSI. That clears the load-bearing requirement for sub-3,000 lb compact platforms with a substantial safety margin.
What separates current-spec spacers from cheap castings is a short list of manufacturing signatures:
- Precision CNC chamfering on the lug holes — no sharp edges that could initiate stress fractures.
- Uniform anodizing thickness to MIL-A-8625 Type II or equivalent.
- Laser-etched traceability codes linking each spacer to its production batch, a practice increasingly mandated by SAE J2530 aftermarket wheel component guidelines.
Frequently Asked Questions
Do 1" wheel spacers require extended studs on a Toyota Corolla?
In most 1993–2026 4-lug Corolla applications, factory stud length delivers enough engagement — 6.5+ full turns — with a 1" spacer and the included lug nuts. If you run aftermarket wheels with thicker mounting pads, measure stud protrusion: you want at least 12mm of exposed thread beyond the wheel's mounting surface. Less than that, and extended studs (ARP or Dorman 610-290 equivalent) are the fix.
Will these spacers trigger my TPMS or ABS warning lights?
Not when installed right — clean, flat mating surfaces and correct torque. Wheel speed sensors read tone ring rotation, not spacer position. Runout from debris, uneven torque, or a non-concentric bore creates the signal variance the ABS module reads as a fault (typically C0200 through C0215). Clean the hub face and torque in a star pattern and you avoid the whole problem.
Do these fit the second-generation Scion xB (2008–2015)?
No. The second-gen xB switched to a 5x114.3 bolt pattern. These 4x100 spacers fit the first-gen xB (2004–2007), Scion xA (2004–2006), 4-lug Corolla (1993–2026), and Echo (2000–2005) only. Always verify your lug count and bolt pattern before ordering.
Hub-centric or lug-centric — which design are these?
Hub-centric. The 54.1mm center bore is machined to fit the Toyota/Scion hub register, so the center flange carries the wheel's radial load. That takes stress off the studs and virtually eliminates high-speed vibration. Lug-centric spacers center on the studs and conical lug nuts alone — less precise, and a poor choice for highway speeds.
How often should I re-torque the lug nuts?
Three checkpoints: after the first 50–100 miles, again at 500 miles, then at every tire rotation interval (typically every 5,000–7,500 miles). The aluminum spacers micro-settle during early heat cycles and can lose 5–10% of clamping force. Use a calibrated wrench set to 76–83 ft-lbs every time.
Do I need an alignment after installing 1" spacers?
Spacers do not change camber, caster, or toe, but the extra inch of track width changes the scrub radius — the geometry between the steering axis and the tire contact patch. That can subtly affect straight-line stability and steering feel. An alignment check is recommended, not strictly required, especially on the xB and Echo, where the narrow factory geometry is more sensitive to track width changes.
Order the Kit, Get Support Fast
Questions before you order? Send a request for quote with your model, year, and wheel specs, and the team will match the right parts to your car.
- Email: support@koeep.com
- WhatsApp: +86 181 3883 8291
If your 2026 service list includes sensors along with stance parts, read the Oxygen O2 Sensor 89465-19535 technical guide for the Toyota Starlet, Corolla, Liteace, and Spacia 1.3L next.
- 4 Pcs 1" 4x100 Wheel Spacers 12x1.5 For Toyota Corolla Echo Scion xA xB 4 Lug — Koeep
- 2 Pcs 1" 4x100 Wheel Spacers 12x1.5 For Toyota Corolla Echo Scion xA xB 4 Lug — Koeep
- 2Pcs 1" 25mm 4x100 Wheel Spacers For Toyota Corolla Echo Mazda Miata Honda Civic — Koeep
- Wheels, Tires & Parts | Koeep Auto & Moto Components
- Oxygen O2 Sensor 89465-19535: 2026 Technical Guide for Toyota Starlet, Corolla, Liteace & Spacia 1.3L — Koeep
- Koeep Request for Quote
- Standards referenced in the source data: ISO 4032 / JIS D 4020 (measurement conventions), MIL-A-8625 Type II (anodizing), SAE J2530 (aftermarket wheel component guidelines)